Issues with the drums, developer units, or transfer belt can lead to poor "image stabilization," which the printer may interpret as a sequence error. Troubleshooting and Fixes If you encounter this code, try these steps in order:
Essentially, the machine's internal system has halted because it did not receive the expected response from a component, or a software process timed out. Common Causes of the 9903 Error
High humidity can cause paper degradation, forcing the registration rollers to work harder and slip, throwing off sub-system timing. Step-by-Step Troubleshooting for Error 9903
Locate the print head cleaning wand (typically housed on the inside of the front cover door).
It is often grouped with "99 codes," which are generally software or timing-related rather than simple physical jams. konica minolta code 9903
Tip: If you are currently using a PostScript (PS) driver and experiencing 9903 errors on complex PDFs, try switching to a PCL6 driver, which handles rasterization differently. 4. Isolate the Network Connection
If the laser path is obstructed by loose toner or paper dust, the machine cannot write calibration lines accurately onto the transfer belt.
Check if the issue occurs exclusively with complex file formats, such as oversized Microsoft Excel sheets containing extensive variable data arrays.
This error is frequently resolved by updating the device to the latest firmware (G00-RF or newer). Hardware Sensors: Issues with the drums, developer units, or transfer
Firmware updates must be performed by a certified Konica Minolta technician or an authorized dealer via a specialized service tool or USB drive. Contact your service provider and mention that the machine is throwing code 9903. Summary of Action Plan Targeted Root Cause Power Cycle Temporary memory/cache glitch Step 2 Clear Spooler Corrupted print job loop Step 3 Change Driver Incompatible data language translation Step 4 Print as Image Vector/font data processing failure Step 5 Firmware Flash Internal controller software bug
Temporarily, you can enter Service Mode -> System 2 -> Error Clear -> select "C-9903" -> Clear. However, if the root cause (bad RAM, firmware, cable) remains, the code will return, often within 24 hours.
Go back to Services, right-click , and select Start .
If the above steps do not work, it might be a hardware connection issue. Step-by-Step Troubleshooting for Error 9903 Locate the print
Complex files (like large Excel sheets with many worksheets or variable data) can cause a 99-03 timeout. Try printing the file as a PDF or in smaller sections. Outdated Firmware:
Understanding and Fixing Konica Minolta Error Code 9903 is a complex system malfunction or phantom paper jam code (often logged as J-9903 ) that prevents the multifunction printer (MFP) from completing its warmup cycle or transitioning to a "ready to print" status. Unlike standard mechanical paper jams that point to a physical blockage in a specific tray or door, a 99-class code typically indicates an internal sensor timing anomaly or a failure during the machine's initial automatic image calibration routines. When this occurs, the copier logs a "phantom" jam because the internal controller cannot reconcile the state of its sensors during startup.
Temporary drops in network connectivity during a large file transfer can corrupt the data packet stream, leading to a processing error. Step-by-Step Troubleshooting Guide
Code 9903 is not universal across all Konica Minolta devices, but it is frequently reported on the following series:
Users and technicians on Scribd and community forums suggest the following steps: